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Emission and distribution profiles of polycyclic aromatic hydrocarbons in solid residues of municipal and industrial waste incinerators, Northern Vietnam

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Abstract

The concentrations and profiles of 18 polycyclic aromatic hydrocarbons (PAHs) in particulate matter (PM10), fly ash (FA), and bottom ash (BA) were examined in three incineration residues. Samples were collected from different municipal and industrial solid waste incinerators in Northern Vietnam. The average concentrations of total PAHs in PM10, fly ash, and bottom ash were 9.55 × 103 ng/Nm3, 215 × 103 ng/g, and 2.38 ng/g, respectively. Low-molecular-weight PAHs (2 to 3 rings) were predominant in most samples. The emission factor of total PAHs decreased in the order of FA > BA > PM10. A higher concentration of total PAHs was found in industrial facilities than that in municipal ones. The high carcinogenic proportion of PAHs together with significantly high annual emissions reflect the high pollution risk to the ecosystem by PAHs in the case of reuse of incineration ashes (e.g., brick production). Regarding the carcinogenic risk of PAH-bounded ashes or particles, calculations from this study imply the significant threat for workers who have been manipulated in the incineration facilities, directly exposed to fly and bottom ashes. Meanwhile, the risk from PAH-bound particulate was not considered a significant threat for both normal adults and children. Further study on PAHs contained in incinerator waste dumps should be conducted in Vietnam to assess the potential contamination risk of these incineration by-products.

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Acknowledgements

We would like to thank the researchers and technicians of Department of Environmental Technology, IET, VAST for their insightful comment and encouragement. Long Hai Pham and Tu Van Vu are thanked for the technical supports.

Funding

The authors acknowledge the funding support from the National Foundation for Science and Technology Development (NAFOSTED) for the project code 104.04–2019.332.

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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Hue Thi Nguyen, Viet Quoc Pham, Thi Phuong Mai Nguyen, and Phuong Thu Le. Further discussion related to environmental impact and health risk assessment was proposed and conducted by Binh Minh Tu and Thuy Thi Thu Nguyen. The first draft of the manuscript was written by Hue Thi Nguyen and Viet Quoc Pham, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Hue Thi Nguyen.

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Nguyen, H.T., Pham, V.Q., Nguyen, T.P.M. et al. Emission and distribution profiles of polycyclic aromatic hydrocarbons in solid residues of municipal and industrial waste incinerators, Northern Vietnam. Environ Sci Pollut Res 30, 38255–38268 (2023). https://doi.org/10.1007/s11356-022-24680-4

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  • DOI: https://doi.org/10.1007/s11356-022-24680-4

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